Pneumatic stacker



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G- ANDERSON PNEUMATIG STAGKBR.

No. 534,489. Patented Feb." 19, 1895.

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G. ANDERSON. PNEUMATIC STAGKER.

No. 534,489. Pate nt ed Feb; 19, 1895.

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G. ANDERSON.

PNEUMATIC STAGKER.

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T all whom it may aoncerm- 7 "Nrr o STATES PATENT 0FFICE.

GUSTAV ANDERSON, OF WELLS, MINNESOTA, ASSIGNOR TO THE MINNE- APOLIS THRESHING MACHINE COMPANY, OF MINNESOTA.

PNEUMATIC STACKER.

v SPEOIFICATION forming part of Letters Patent No. 534,489, dated February 19, 1 895.

Application filed February 26, 1894- gerialNo. 501,491. (No model.) 7

Be it'known that I, GUSTAV ANDERSON, a citizen of the United States, residing at .IVells, in the county of Faribault and State of Minnesota, have invented certain new and useful Improvements in Pneumatic Stackers; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to pneumatic stacke'rs, for co-operation with thrashing machines; and has for its object to provide a pneumatic stacker, which shall be eflicient for the purposes had in view, which shall be comparatively simple in construction and comparatively light in Weight.

To these ends, my invention consists in the novel features hereinafter f all y described and defined in the claims.

The accompanying drawings illustrate my invention, in which like letters referring to like parts,Figure 1 is a plan view and Fig.

2 a right side elevation showing myimprovedstacker, as applied to an ordinary thrashing machine separator, with some parts broken away. Fig. 3 is a longitudinal vertical section, on the line X X of Fig. 1. Fig. 4 is a horizontal section, on the line X X of Figs. 2 and 3, with some parts removed; and Fig. 5 is abottom plan or an underneath view of the stacker.

a represents a part of the thrashing machine separator frame; a, one of the riddles; a the tailings conveyor, and a. the strawraok or delivery section of the straw-carrier, of an ordinary thrashing machine separator. In other words, the parts a a a a are intended to represent the delivery end of any thrashing-machine.

b b I) represent the trunk sections of the stacker; of which partsb is the lowermost or receiving section; b, the central section, and b the outermost Or delivery section. 1 The lower trunk section b is provided with a fanshaft 17 the ends of which are extended outward, and are journaled in trunnion bearings a, on the separator frame a which extend into bearings a on the stacker section b. 'Thesaid shaft 17 and bearings a? form a pivotal center for the angular adjustment of the entire with a suitable'pulley 12 for the application of power from some moving part of the thrashing machine.

In virtueof the fact, that the fan-shaft 12 fans b and cases b", are all carried by the receiving trunk-section b,it is obvious that the fan-cases will follow all the adjustments of the stacker. In other' words, the discharge outlets b of the fans, may be located, once for all, in the proper positions to produce the most effective line of blast, and this line will be preserved, as a constant quantity, in all the angular adjustments of the stacker. This is an-important improvement in this class of stackers. Hitherto, as far as I am aware, the stacker-fan has been located in the separator, apart from the stacker; and hence,'under the necessary adjustments of the stacker, the blast from the fan would strike the stacker trunk at diderent angles and have correspondingly dilferent effects on the straw.- The use of two fans, spaced apart from each other on opposite sides of the center of the stacker-trunk, is also an important improvement; in virtue of the fact, that the blast from the two fancase outlets b may be discharged on the lines blast therefrom would be'to'spr'ead the straw sidewise against the side walls of the trunk, therebyincreasing the friction, and the tendency tolodge the strawin the angles or corners of the trunk. In other words, the pair of fans tend to produce the best clearance and carrying power of the blast; while a single fan, as demonstrated by experience, is liable to permit the trunk to become choked to a greater or less extent.

The fact that the supply of air for the fans is drawn from the exterior instead of from the interior of the machine, is also an advantage, in that all interference with the sepa rator-t'ans from the stacker-fans, is thereby avoided.

The receiving trunk-section b underlies the delivery or tail-end of the separator, and at its loweror receiving portion is open at its top and provided with upwardly extending sidings, composed, as shown, of skeletonframes 1) and canvas curtains 11 adapted to overlap the sidings of the separator frame. The open top, at the receiving portion of the trunk-section b, is an advantage, in that an outlet is thereby afiorded, for the blast from the separator-fans directly into the open air, without passing through the stacker-trunk. The blast from the separator-fans is comparatively light, as compared with the blast from the stacker-fans, and, where the receiving trunk-section is entirely closed, may not be able to force its way through the trunk; and as a result thereof, the separator-fans would fail to produce their proper cleaning efiect on the riddles. The opening at the top of the receiving trunk section does not interfere with the proper action of the stacker-fans as the blast is so strong, it will becarried, at once, into the closed part of the trunk. effect is further insured by setting the fan outlets b in such position that the blast therefrom will, under the action of the fans I), be thrown into the trunk at a slight downward dip or angle.

The central trunk-section b is pivotally connected to the top of the receiving section b by angularly placed strap-irons b secured to the sides of said section and a transverse hinge-rod 1), connecting the said straps at their angular junctions. To the sides and bottom of the trunk-section b is secured a joint box I), which telescopes with the bottom and sides of the trunk section b, and serves to maintain a sutficiently close (though not air-tight) joint between the said sections 1) and I), under the angular adjustment of the section b in the vertical plane, within the limited range required in working positions of the stacker. The section b and the de livery section 19 carried thereby, is angularly adjusted for working positions, by a push-bar b, which bears against the lower edge of the joint-box I), as shown in Fig. 5. The upper end of the push-bar b is held and guided by a keeper I2 and the lower end of the same is attached to a hand-lever I)", pivoted as shown at b and securablein any set position by a lock-plate b. It is obvious that by manipulating the hand-lever b", the trunksections 7) and b may be adjusted as desired,

This

with respect to the section b in the vertical plane.

The uppermost or delivery trunk-section b is so connected to the section b, that it is capable of sidewise or lateral angular motion thereon, while at the same time, it is rigid with the section b, in respect to angular adj ustment in the vertical plane. For these purposes, the bottom and top walls of the said sections 19 and I) over and underlap with each other, as shown at 11? in Figs. 2 and 3; are cut away at their sides, as shown at b ,in Figs. 4 and 5; and are connected by vertical pivot bolts b, extending through the said overlapping parts of the top and bottom walls and reinforcing strap-irons b fixed to the section I). The upper pivot bolt I3 also extends through a transverse lever I9 4, rigidly secured to the top of the section U The ends of said lever I) extend outward beyond the sides of the trunk and are connected by ropes or other flexible connections Z9 with a windlass b secured to the bottom of the lower trunk-section b, in bearings 79 fixed thereto. The said ropes 73 pass through the eyes b in the hinge-rod b and are so attached to the Windlass I) that they wind up or unwind in opposite direction. In other words, one of the said ropes I9 will be wound up and the other unwound by turning the Windlass b and hence, it is obvious that the trunksection b may be swung laterally in either direction on the trunk-section b, by turning the said Windlass b in "one or the other direction. The Windlass b carries a square notched lock-disk 12 with which engages a gravity pawl W to hold the same and the trunk-section b wherever set. The fact that the side walls of the section b are cut away,

as shown at 19 permits the angular lateral adjustment of the said section b on the section I); and the joints between thesides of the two sections are sutiiciently closed by joint plates b pivoted to the side walls of the section b, and projecting with their upper or free endsinside of the section 72 Under the action of the blast from the stackerfan, these joint-plates b will be thrown outward, so as to close the openings D and maintain the joint sufficiently tight, at the sides, for all practical purposes. This joint, however, between the scctionsb' and b isnot airtight. The joints at the top and bottom are maintained sufliciently tight, by the over and underlapping parts of the top and bottom walls of said sections, shown at 12 The bottom of the uppermost or delivery trunk-section is cut away, as shown at. 0 and between the side-wallsof said section, near its upper end, directly over the opening D is mounted a gate Z1 pivoted to the top wall of said section, as shown at 12 To this gate 12 is attached a diagonal lever D thg ends of which project at each and beyond th gate. This lover I) is subject, at, its upper end, to a spring I), orequivalent device, tend ing to throw the gate intoits uppermost or open position; and, at its lower end, has attached thereto a rope I) or other flexible connection, which passes through suitable guiding eyes I) on the trunk-section b and thence to a spring-clamp 6 on the trunk-section I). Under the co-operation of the spring Z2 and the rope I), the gate 19 may be set v and held in any desired position for co-operation with the opening h to afford a discharge outlet of the desired size from the upper end of the trunk-section 11 The fact that this tate Z1 is set on an angle causes the same to deflect the straw downward as delivered from the stacker. The fact that it is pivoted between the side-walls of the trunk-section, enables the gate to be made light and affords a continuation of the trunk-section when raised into its more open position. This arrangement of the delivery gate is much better in every way, than to employ a box-gate, as has hitherto been done.

From the hinge-rod 11 extend stay-ropes b, or other flexible connections, to a Windlass b journaled in suitable bearings b, on the top of the separator-frame a. This Windlass is provided with a ratchet lock-disk b, engaged by a pawl b, for holding the same wherever set. As the delivery section b is rigid with the central section b, in respect to vertical'adjustment, and as the centralsection Z) is hinged at its top to the lowermost or receiving section b, it is obvious that with the Windlass Z9 and ropes 12 the stacker as an entirety may be raised or lowered on its pivotal bearings a b toany desired angular adjustment in the vertical plane, with respect to the separator.

When out of use or when moving from place -to place on the road, the stacker will be raised to its highest position. by the Windlass b and the trunk-section b b be turned inward on the hinge-bolt b, so as to fold back on the trunksection band the top of the separator.

All the parts of my improved stacker, have now been specified; and the operation is probably clear from the detailed description of the parts. The straw and chaff delivered from the separator are received at the open part of the trunk-section b, and, under the action of the blast from the stacker-fans b*, will be carried out through the stacker-trunk and be delivered, in any direction or elevation desired, from the upper end of the same. The stacker as anre'ntirety will be adjusted from time to 5 5 time,and the sections b and b on the section b in the vertical plane, when necessary or de-" sirable to bring the upper end of the stacker trunk to the proper level; and the delivery section b will be adjusted sidewise on the sec 66 tion I), more frequently, in order to spread the straw as may be desired on the stack.

From the description given, it is obvious that all the parts of my pneumatic stacker may be of a simple and cheap construction,

as no attempt is made to maintain air-tight The points of advantage in respect to efficiency in work, have been already noted in the detailed description. By actual usage, during the past season, I have demonstrated the practicable and serviceable character of this form of pneumatic 8o stacker.

- It will be understood thatchanges might be made,in the details of the construction, without departing from the principle of my invention.

What I claim,and desire to secure by Letters Patent of the United States, is as follows: 1. In a pneumatic stacker, the combination with the trunk section b of the trunk section b pivoted to the section b, for angular adj ust- '90 ment in the vertical plane, the joint-box b and the push-bar b lever b" and a locking device I), for adjusting said section b','s ubstantially as described.

2. The combination with the trunk section 5 I) having the bottom opening b, of the outlet gate 11 pivoted to the top and working between the side walls thereof, tlie lever Z9 and the spring 6 the flexible connection Z7 all operating substantially as and for the pur- 10o GUSTAV ANDERSON.

.Witnesses:

EMMA F. ELMORE, J AS. F. WILLIAMSON. 

